Oil-well pump.



0. QARVER & M. GRIDER.

OIL WELL PUMP.

APPLICATION FILED SEPT-1 3, 19l5. 1,190,281. Patented July 11', 1916.

H I 1 I I 7 UNITED STATES OTTO GARVER AND MARION GRIDER, OF ST. MARYS, OHIO, ASSIGNORS OF ONE-THIRD lk C.;

To C. W. SCHMEHL, OF ST. MARYS, OHIO.

OIL-WELL PUMP.

Specification of LettersPatent.

Patented July 11, 1916.

Application filed September 13, 1915. Serial N 0. 50,290.

To all whom it may concern Be it known that we, OTTO GARVER and MARION GRIDER, citizens of the United States, residing at St. Marys, in the county of Auglaize and State of Ohio, have invented certain new and useful Improvements in Oil-Well Pumps; and we do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same,

' reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which form a part of this specification.

This invention relates to certain new and L useful improvements in pumps for oil-wells.

The object of the invention is to provide a construction which enables the withdrawal of the standing valve to permit the attachment of a tap without having to previously draw the piston.

A further object of the invention'is to provide means whereby the standing valve may be gradually lowered into the barrel on the lower end of the tube, and whereby the accumulation of parafiin thereon and an interference with the working thereof,.,and an accumulation of scale between the stand- I 0 ing and working valves is prevented. These A and other objects whereby the efficiency of from the following description in connection with the accompanying drawing.

Referring to the accompanying drawing,

,7 Figure 1 is a side elevation with the tube or cylinder of an oil-well pump as con structed according to the present invention said tube being shown in section; Fig. 2 is a similar view with parts shown in section;

Fig. 3 shows the method of extracting the standing valve; Fig. 4 shows the method of lowering the standing valve; and Fig. 5 is a section on the line a-a. of Fig. 3.

Referring. more particularly to the drawings, 1 represents the tube or cylinder of V the pump. The piston is located therein and consists of a cage 2 which receives a ball-valve 3 and is attached to a body-por- 59 tion 4 provided with cup-packing 5. The cage 2 is attached to the lower end of a sucker rod 6 by means of which the said piston is actuated. The standing or inlet valve is somewhat similar to the piston and consistsof a cage 7, ball-valve 8, body-porthe pump is materially enhanced will appear .tion 9 and cup-packing 10. The standing valve rests at-the lower end of the tube on a ring or interior flange 11.

The piston and standing valve above de- The standing valve is not mit the same to be easily extracted and for other reasons hereinafter mentioned, the following attachment is provided.

Adapted to be permanently attached to the lower end of the body-portion 4 of the piston is an elongated cage 12 which is tapered on the exterior surface and has an octagon shaped longitudinal bore. This cage 12 is provided with longitudinal slots'13 which permit the oil to pass through the piston free and unobstructed. The cage 12 is provided with the longitudinal bore, referred to, in which is placed-an octagon nut 14. The nut 14 is prevented from falling out of the cage by an internal flange 15 on the lower end of said. cage and is pressed downwardly by springs 16 and 17. One of these springs is lighter than the other and.

surrounds the body ofa plunger 18 and the other rests upon the head 19. The bore of the nut 141 is prevented from becoming stopped up with broken particles of the cups or scale by the plunger 18. The normal position of the nut 14 andthe plunger is shown in Fig. 2 where it will be seen the nut will be maintained in a clean or non-clogged con-.

dition. The said nut receives a threaded stem 20 attached to the cage 7 of the standing valve by the aid of a jam-nut 21. When it is desired to extract the standing valve from the tubing, the piston is lowered and is then rotated to cause the nut 14: to screw onto the stem 20, thereby afiecting a connection of the working and standing valves and enabling the extraction of the standing valve without previously removing the working valve and attaching'a tap to said working valve which is at present a general custom. Also, it will be noted that the standing valve may be bumped by the piston to dislodge any obstruction under the valves or balls 3 or 8 without interfering with the means for extracting the standing valve, as the nut 14 will recede in the cage 12 as is shown in Fig. 4:.

At present it is believed to be the custom, when placing the standing valve in position, to drop the same from the top of the tubing. This practice results in serious consequences as the valve is liable to choke up with paraflin scraped from the sides of the tube; also, scale is liable to accumulate between the standing valve and piston. To overcome these difficulties, means are provided to gradually lower the standing valve with the piston as follows. Attached to the cage 7 of the standing valve by means of the nut .21 are spring clamps 22 adapted to engage an external annular bead 23 on the lower end of the piston cage 12. When it is desired to lower the standing valve, it is attached to the cage 12 by means of the spring clips 22. The valve and piston are then lowered together by the sucker rod 6. The connection of the spring clips 22 with the standing valve cage 7 is of a character to prevent any scale or obstruction of any kind coming in contact with the ball and seat of the standing valve while entering the barrel on the bottom of the tubing. The octagon nut in the cage of the piston engages the threaded stem 20 when the two valves set together. When necessary to pull the standing valve, the sucker rod in the interior of the tubing is turned to the right which will also turn the octagon nut which, with gravity and the smaller spring 16, will fit the said nut onto the said threaded stem. Thus a connection is formed enabling both valves to be withdrawn together. It is to be understood that the tube above the cylinder 1 is of larger diameter than the cylinder and when the standing valve enters the cylinder it may be secured in its proper position by bumping the same. During the lowering of the valves, the nut 14 occupies the position shown in Fig. 4 where it will be seen that the valves may be disconnected at the clips 22 by raising the piston.

While in the drawings and specification,

we have shown and described the cage 12 as mounted on the piston and the stem 20 and clips 22 as mounted on the standing valve, it is to be understood that this arrangement may be transposed without departing from the spirit of the invention.

Having described our invention, we claim.

1. In an oil well pump, in combination, a piston and a standing valve, a threaded stem mounted on said valve, a nut splined to said piston, and resilient means connecting said piston and valve adapted to normally close the opening in said nut, substantially as described.

2. In an oil well pump, in combination, a piston and a standing valve, a threaded stem secured to said valve, a nut splined to said piston, and a plunger mounted in said nut, substantially as described.

3. In an oil well pump, a piston and a standing valve, a threaded stem on one of said parts, a nut yieldingly mounted on the other of said parts and adapted to engage said threaded stem, and a yieldingly mounted plunger received by said nut, substantially as described.

4. In an oil well pump, a standing valve the cage of which is provided with a threaded stem, resilient arms secured to said cage at the base of said stem, a piston having an extension provided with oil ports, said extension having an annular bead adapted to be engaged by said resilient arms to unite the valve and piston, a nut slidably mounted in said extension and adapted to receive said threaded stem to unite said valve and piston, and a plunger arranged in said extension and controlled by springs which maintain a contact between said plunger and said threaded stem, substantially as described.

In testimony whereof we aflix our signatures, in presence of two witnesses.

OTTO GARVER. MARION GRIDER. l/Vitnesses:

W. H. HEOKLER, L. NURNONG.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G, 

